@Test
  public void test_global_constant() throws Exception {
    Symbol constant = SYMBOL_MODEL.getSymbols("CONSTANT").get(0);

    assertThat(constant.hasModifier("const")).isTrue();
    assertThat(constant.is(Symbol.Kind.VARIABLE)).isTrue();
  }
  @Test
  public void test_class_fields() throws Exception {
    Symbol field = SYMBOL_MODEL.getSymbols("$field1").get(0);
    Symbol constantField = SYMBOL_MODEL.getSymbols("CONSTANT_FIELD").get(0);

    assertThat(field.hasModifier("public")).isTrue();
    assertThat(field.is(Symbol.Kind.FIELD)).isTrue();

    assertThat(constantField.hasModifier("const")).isTrue();
    assertThat(constantField.is(Symbol.Kind.FIELD)).isTrue();
  }